Assuming both billiard balls have the same mass, conservation of momentum says
where m = mass of both billiard balls, and v₁ and v₂ = their initial velocities, and v₁' and v₂' = their final velocities. The masses are the same so the exact value of m is irrelevant. The first ball has initial speed 5 m/s and the second is at rest, so
After the collision, the first ball has speed 4.35 m/s and is moving at angle of 30° below the original path, so
Then the second ball has final velocity vector
so it moves with speed
at an angle of
or about 60.5° above the original line of motion.
Initial speed(u)=0m/s
Final speed(v)= 27m/s
Time(t)=7.6s
Use the equation of motion: v = u + at
27 = 0 + a(7.6)
27/7.6 = a
a = 3.55 m/s^2 (3 s.f)
Answer: metals, non metals and semi metals
Explanation:
Answer:
Explanation:
Properties of Projectile Motion. Objects experiencing projectile motion have a constant velocity in the horizontal direction, and a constantly changing velocity in the vertical direction. The trajectory resulting from this combination always has the shape of a parabola.